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    "# python函数式编程"
   ]
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   "source": [
    "1、函数是第一等公民“first class functions”。\n",
    "    \n",
    "    函数是对象\n",
    "    函数中可以嵌套定义函数\n",
    "    函数可以作为右值赋给变量\n",
    "    函数可以作为参数（高阶函数条件之一）\n",
    "    函数可以作为其他函数的返回值（高阶函数条件之一）\n",
    "\n",
    "2、闭包\n",
    "\n",
    "3、柯立芝"
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